The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From International Seed Federation:
ISF WSC 2014 conference app is your full featured guide to manage your conference attendance. App features include: Native app: No wifi connection required to access the conference program, schedule or animated maps. Now: Stay informed about hot issues, event program changes, your upcoming sessions and organizer messages. Program: Browse the entire event program to build your personal schedule and bookmark sessions. Take notes and email them as part of your trip report for reference. Delegates, Traders, Exhibitors, Sponsors, Maps, related conference info and much more.